1964846438 has 16 divisors (see below), whose sum is σ = 3127541760. Its totient is φ = 923780616.

The previous prime is 1964846423. The next prime is 1964846441. The reversal of 1964846438 is 8346484691.

It is a self number, because there is not a number n which added to its sum of digits gives 1964846438.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359270 + ... + 364697.

It is an arithmetic number, because the mean of its divisors is an integer number (195471360).

Almost surely, 2^1964846438 is an apocalyptic number.

1964846438 is a deficient number, since it is larger than the sum of its proper divisors (1162695322).

1964846438 is a wasteful number, since it uses less digits than its factorization.

1964846438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724051.

The product of its digits is 3981312, while the sum is 53.

The square root of 1964846438 is about 44326.5883866557. The cubic root of 1964846438 is about 1252.4955877577.

The spelling of 1964846438 in words is "one billion, nine hundred sixty-four million, eight hundred forty-six thousand, four hundred thirty-eight".